A son and a brother of Sen. Joseph R. Biden Jr. (D-Del.) are accused in two lawsuits of defrauding a former business partner and an investor of millions of dollars in a hedge fund deal that went sour, court records show. The Democratic vice presidential candidate's son Hunter, 38, and brother James, 59, assert instead that their former partner defrauded them by misrepresenting his experience in the hedge fund industry and recommending that they hire a lawyer with felony convictions. The legal actions have been playing out in New York State Supreme Court since 2007, and they focus on Hunter...